VA-BC Vascular Anatomy & Physiology

Question 1

Which vessel carries oxygenated blood from the heart to the body?

Accepted Answer

Aorta

Answer

The aorta is the largest artery in the body, originating from the left ventricle of the heart. Its primary function is to distribute oxygenated blood from the heart to the systemic circulation, supplying all parts of the body except the lungs.

Question 2

Which structure connects arteries and veins?

Accepted Answer

Valve

Answer

Capillaries are the smallest blood vessels in the body, forming a crucial network that connects arterioles (small arteries) to venules (small veins). Their thin walls allow for the efficient exchange of oxygen, nutrients, and waste products between the blood and surrounding tissues. Valves, conversely, are structures found within veins and the heart to prevent blood backflow.

Question 3

Veins carry blood:

Accepted Answer

Toward the heart

Answer

Veins are blood vessels that primarily carry deoxygenated blood from the body's tissues back to the heart. This is in contrast to arteries, which carry oxygenated blood away from the heart. Once blood reaches the heart via veins, it is then pumped to the lungs for reoxygenation.

Question 4

What is the function of valves in veins?

Accepted Answer

Prevent backflow

Answer

Veins, particularly in the limbs, contain one-way valves that are crucial for ensuring blood flows in the correct direction—towards the heart. These valves open to allow blood to pass and then close to prevent it from flowing backward due to gravity or low pressure. This mechanism helps maintain efficient circulation.

Question 5

Which of the following is a deep vein in the upper extremity?

Accepted Answer

Brachial

Answer

The brachial vein is a major deep vein located in the upper arm, running alongside the brachial artery. Unlike superficial veins such as the cephalic and basilic, deep veins are typically found closer to bones and often accompany arteries, making them less visible but more protected.

(VA-BC) Vascular Access Nurse Certification Practice Test

(VA-BC) Vascular Access Nurse Certification Practice Test

VA-BC Vascular Anatomy & Physiology